The most important thing to remember as any parent, and just as much so in separated families, is that you must be proactive and protective should your children face a serious or significant threat.
You must protect them from any real potential harm regardless of whether there is a parenting plan in place, Court orders or simply an agreement between the parents in split family situations where care is shared.
So, yes you should withhold a child if there is a known risk that a child may be subject to or exposed to family violence, illicit drugs, neglect, possible injury or emotional/psychological harm.
What all parents need to know is that no Court or authority will look poorly upon a parent who acts in the best interests of a child under the above circumstances; but remember you will have to justify your actions if the other parent takes the matter up with a Court so hard evidence is good (such as emails, texts, doctors reports etc.)
For more information, contact the Brisbane Family Lawyers team at James Noble Law for a FREE 20-minute consultation today to schedule an appointment with one of our Qualified and experienced Family lawyers Brisbane.